How much does a 3.00 to 4.99ct I SI1 natural asscher diamond cost?

As of September 2026, 3.00 to 4.99ct I SI1 natural asscher diamonds typically cost $21,346 USD to $52,176 USD, with a median price of $32,326 USD. There are currently 39 diamonds matching this specification available across retailers.

Where can I find the best price on a I SI1 asscher diamond?

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3.00 to 4.99ct I SI1 Natural Asscher

Quick answer

As of September 2026, there are 39 natural asscher diamonds with I color and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $21,346 USD to $52,176 USD, with a median of $32,326 USD. At least 42 retailers stock this exact specification. Half of all listings fall between $9,263 USD and $12,747 USD per carat. The same specification in lab grown form lists at a median of about $1,239 USD per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Asscher natural stones in the index: 2,601 USD per carat, +11.1% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

Lowest Price

$15,455 USD

Highest Price

$77,859 USD

Average Price

$33,476 USD